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摘要
En 中文
By requiring that a bounce is non-singular and that perturbations are well behaved at all times, we narrow the scope of possible models with one degree of freedom that can describe a bounce in the absence of spatial curvature. We compute the general properties of the transfer matrix of perturbations through the bounce, and show that spectral distortions of the Bardeen potential F are generically produced only for small wavelengths, although the spectrum of long wavelength curvature perturbations produced in a contracting phase gets propagated unaffected through such a bounce.
Keyword:
cosmological perturbation theory
inflation
physics of the early universe
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期刊
IF:
5.9
论文数:
1.3W
被引数:
4.7W
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